src/anims/LinearWipe.tsx

import React from 'react';
import { TransitionImplementationProps } from 'remotion-transition-series/lib/components/Transition';

export const LinearWipe: React.FC<
  TransitionImplementationProps & {
    angle?: number;
  }
> = ({
  angle = 0,
  progress,
  exitingElement = null,
  enteringElement = null,
}) => {
    const a = (angle * Math.PI) / 180;
    const dist = Math.abs(Math.cos(a)) + Math.abs(Math.sin(a));

    const box = [
      [-1, -1],
      [-1, 1],
      [1, 1],
      [1, -1],
    ]
      .map(([x, y]) => [dist * x + dist * 2 * (1 - progress), dist * y])
      .map(([x, y]) => [
        x * Math.cos(a) - y * Math.sin(a),
        x * Math.sin(a) + y * Math.cos(a),
      ])
      .map(([x, y]) => [x + 1, y + 1])
      .map(([x, y]) => [50 * x, 50 * y]);

    const polygon = `polygon(${box
      .map((p) => `${p[0]}% ${p[1]}%`, [])
      .join(',')})`;

    return (
      <>
        <div
          style={{
            position: 'absolute',
            left: 0,
            top: 0,
            right: 0,
            bottom: 0,
          }}
        >
          {exitingElement}
        </div>
        <div
          style={{
            position: 'absolute',
            left: 0,
            top: 0,
            right: 0,
            bottom: 0,
            clipPath: polygon,
          }}
        >
          {enteringElement}
        </div>
      </>
    );
  };